.bg {
    /* The image used */
    background-image: url("/img/gotas.png");
  
    /* Full height */
    height: 100%;
  
    /* Center and scale the image nicely */
    background-position: center;
    background-repeat: repeat;
    background-size: cover;
  }

  img {
    opacity: 0.5;
  }

  body {
    width: 100%;
    min-height: 100vh;
}

#sidebarfix {
  position: fixed;
  top:20;
  left:10;
 }